Expansible bolt lock



y F J. D CSV VLING EXPANSIBLE BOLT LOCK Filed June 15, 1925 Patented May 28, 1929.

UNITED STATES FRANCIS J. BOWLING, OF NEW YORK, 1r. 2., assi'enon 'ro sneer. Loon (30., mo, OF'NEVV YORK, N. Y., A oon-ronnrro r OF'NEW YORK.

A T E r -riot? EXrAnsiBLE BOLT LOGK;

Application filed June 18, 1925. Serial no. 36,815.

This invention relates to jimmy-proof locks, and more particularly to novel actuating means arranged for use in connection therewith.

Among the objects of this invention is to provide a jimmy-proof lock having novel a'ctuating means for operating the bolt, said a'ctuatin means having engagement with a relatively fixed abutment member within the I lock casing for holding the bolt in retracted or projectedv position.

Another object of this invention is to provide a jimmy-proof lock or the like having novel actuating means for operating the bolt, said actuating means being arranged for a straight line motion parallel to the axis of the I lock, and having a movable'member which has co-operation with relatively fixed abutment means for retaining the bolt in retracted or projected. position.

Another object of this invention is tov pro v novel actuating means being provided for vide'a lock having a bolt arranged for swinging into the jamb' piece laterally of the lock, said lock having actuating means for operating the bolt into projected or retracted position and having a bearing member for this purpose upon which said bolt is arranged to swing, said actuating means comprising a movable member. spaced from said bearing member and having engagement with abut ment means for limiting the movement of; said actuating means and consequently ot has reachedits limits.

said bolt when the same of movement. V w

Still another object of this invent ion is to provide a bolt which is re-enforced by a hard ened pin or the like to prevent the same from.

being sawed through.

ith the foregoing and other ob ects in view the invention consists in the combina-' tion .and arrangement of par-ts hereinafter described and claimed, and while the 1nvention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a prac-. tical embodiment of the invention reference is had to the accompanying drawings in which like reference characters designate the same parts in the several which Figure 1 IS a longitudinal sectionof the views, and in lock taken on the line 1-1 ofFig. 2

Fig. 2 is a plan' view. of theloek mechanism thezline 1.,

' mounted upon a door '11, and

Fig. 3 is a section on the line 3-3 of Fig.

gaging position.

Fig. at is a perspective view of a portion of the actuating means.

- Figs 5 is a perspective View. of a detail of mountedupon a ja1nb13. The lock. is provided with a knob 14 for operating the look from within, and with a plate or key'way 15 without the door throughwhich a key is in serted in a. conventional manner. However,

with slight changes in construction the lock may be arranged as a mortise lock, and may beuscd tor either sliding or swinging doors.

A bolt 16 is providedwhich i's'movable out of the lock easing into thejamb piece,

this purpose which are movable in-a direcin Figs. 1

tion substantially parallel to the longitudinal axis of thelockor path of movement of the bolt. To render the lock jimmy-proof, the bolt is arranged formovement' into the jamb piece in a direction laterally. ofthe lock, a bearing 17 being provided which is carried directly by the actuating means. Said ac-.

tuating meanscomprises a'plate orcarrier 185 which is arranged for sliding movement within the lock casing and withwhich' said bearing member maybe formed integrally as by means of the neck or extension 19, whereby said bearing member is projected without the lock casing and into the, jamb piece when the door is locked. By. provid ing a pair of thebolts 16, Iarrangethe same for co-operation with each .other'and to be carried as a unit by the bearing member 17;

More specifically, each bolt comprises a pair.

obtuse angleto each of arms disposed at an 85' EARDVIARE a keeper 1-2 1 butwith the crank member shown in 'en other andpositioned symmetrically with respect to each other so that when the arms which are at one side of thebeari-ng and with in the lock casing lie'in contact with each other, the other arms lie without thelock cas-.

ing and in spaced angularrelatio'n. Each bolt is formed with a eut'outQO to receive the neck 19 whenth'e bolt is projected as shown 2. The sides of the opening and lock pasing through 'whichythe bolts f t J, I i

7 when said bolts are retracted, said cam memwith suitable guide means,

bers will bear upon the spaced arms of the bolts and cause the bolts to tilt upon said bearing member, bringing the aforesaid arms into contiguity to each other as shown in Fig. 6. Again, whenfthe bolts are projected, I

the lugs 22 prevent further outward movement of the bolts by abutting against the wall of the lock casing adjacent to the cams 21. Abutment members 28 are also provided to contact said lugs and to resist a force transversely to said longitudinal axis which may beexerted by a tool inserted between the jamb piece and the lock casing with the object of jimmying the lock. Guides 2 1 are also provided at the sides of the lock casing I each of which contacts a ofthe bolts being caused in any suitable manher, or by means extrinsic of the actuating means as described.

The carrier 18 is movable in co-operation such as the lugs with which said 25 at the sides of the lock, plate has sliding contact.

feet 26 which have sliding contact with a wall of the lock to support the rear end of the. carrier plate.

Said carrier plate is preferably arranged for movement along a plane which is central to the lock as shown in Fig. 1. At its forward end, the carrier is provided with flanges 27' which extend transversely thereto and contact thefront wall 28' of the lock and the cover plate 29 thereof.

Supported upon said carr v of a pin 30 is a movable member or bell crank 31 which is adapted for pivotal movement aboutsaid pin and alongthe face of the carrier. Said bell crank is provided with a pair of spaced p ns 32 and 33 upon the former of which a spring Set is mounted, one end of which spring has co-operation with the pin 33, and. the other end thereof with a pin 85 fixedupon the carrier, whereby a force i s imparted to the bell crank tending to rotate the same in a clockwise direction, looking at Fig. 2'. The other arm of the bell crank is provided with meansto engage a movable or rotary member such as acrank arm or the i like adjacent to the plate 29 whereby the bell crank may be swung in counter clockwise direction about the pin 30. More specifically, said bell'crank isprovided with a lug 3? of substantially 'U form or the like, the open end of the U lying disposed to receive the downwardly projecting lug 38 of thecrank the bolts projected or retracted.

V Said carrier is also provided with guide means such as the i the bolts.

ier as by means crank arm 36 is operated by means of the blade 1 which. is turned by. key operated mechanism in a conventional manner, while the crank 39 is rotated directly by the knob 1 The U it) is pesitioned upon an opposite side ofthe carrier relatively to the U 37 and has suitable connection therewith as by means of a pin 49,. The carrier plate may be provided with an arc-shaped slot 4C3 within which said pin is movable when the bell'crank is operated, thus making for a rigid construction of the actuating mechanism. It will be observed that both the U 37 and the 'U' 40 open in the same direction thus providing for the desired movement of the bell crank either by a key or the knob 14. The member 10 however is provided with an extension a l which is adapted -to abut against the circular flange portion of the crank 39, when the bell crank is retained by the spring in normal position either with V Abutment is also provided between a shoulder L5 forming a part of the case and the extension 14 of the crank arm. In this way the bolts are retained against movement except in the usual manner by actuation of the bell crank by one of the crank arms, thus preventing unintended movement of the bolt. To unlock the door, the abutting portion of the bell crank is sprung to a side of the look by means of a crank arm, further rotation of said arm operating to impart a force to the bell crank, which is in turn transmitted to said carrier by means of the pin 30 causing the carrier to move along the lock and to. project or retract It the latter occurs, abutment takes place shown in dot-dash lines in Fig.

'3. T he spring insures that'the bell crank will be retained constantly in normal abutting relation. A lug or guide 16 is provided upon the bell crank in position to slidably abut against'the cover plate 29 and thus, in cooperation with the feet 26 to retain the carrier plate inceiitral sliding position.v

To guard against the possibility of a bolt being cut by a saw inserted between the lock casing and the amb piece, the bolt may be made of case b ard'cned steel or its equivalent, or I may provide hardened steel re-enforcement means to co-operate with said bolt so as to lie in the path of the saw. More specitieally, pins. 17 which are case hardened or the like are inserted into each bolt 16 adjacent to the outer portions of the lock. Thus the bolt maybe made of cheaper metal which, however, will. be of sufficient strength and toughness towithstand all stresses, while said 'pin renders the bolt saw-proof. It will be theinner or heel ends of the noted also that bolt members, in projected position, abut squarely and directly against the forward means of V iso means effective to move said carrier as aforesaid, novel abutment means bemgprovided which co-operate with the bell'crankto retain'the bolt against unintended movement. It will be noted also that the length of the bolt members andtheirana'nner of actuation provide for a considerable variation in clearance between the striking edge of the door and the jamb piece without interfering with the proper and reliable operation of the mechanism.

I claim:

1. In a lock, the combination with a bolt, of actuating means for operating said bolt, said actuating means comprising a carrier movable along the lock, a swinging member mounted upon said carrier, and a crank member for operating said swinging member, and having abutment therewith, said crank being connected to saidswinging member to move said bolt, said swinging member being nor mally in abutment relation with said crank and out of abutment relation therewith when swung by said crank member in order to move the carrier, and said abutment relation operating to prevent movement of the carrier along the lock except when said swinging member is actuated as aforesaid.

2. In a lock, the combination with a bolt, of actuating means for operating said bolt, said actuating means comprising a carrier, a movable member borne by said carrier, and crank and abutment means within the lock eo-operating with said movable member to move the same out of abutment relation and then to exert a force upon said member which in turn imparts said force to said carrier to move the same and hence the bolt into pro-' jected or retracted position, and guide means within the lock for causing said carrier to move in a predetermined line along the lock between its extreme positions, the lateral component of said force being taken up by said guide means.

3. In a lock, the combination with a belt, of actuating means for operating said bolt comprising a carrier, a bell crank pivoted upon said carrier, resilient means co-operating therewith to retain said bell crank in constant normal position, a crank member for swinging said bell crank to cause said carrier to move along the lock to operate said bolt,

-guide means for causing said carrier to move 'alon'g a predetermined line of motion, and

abutment means having abutment relation with. said bell. crank to retain the same against movement along the lock except when said bell crank is swung-out of abutment relation bymeans'of said crank member.

of the path of said abutmentmeans by said crank member, and means tending normally to retain said movable member in abutment relation. v r

5. In alock, the combination with a bolt, of actuating means therefor comprising a carrier movable along said lock, a movable member mounted upon said carrier, said movable member comprising parts positioned upon opposite sides of the carrier, aplurality of cranks, one on each side'of the carrier and adapted selectively to engage the movable member upon the respective sides of the carrier to impart a force thereto to cause said carrier to move along the lock, means having abutment with the movable memberwhen the bolt is projected and when it is retracted at the extreme limits of motion of said actuating means to prevent movement of said bolt except when said member is swung out of the path of said abutment means by action of the cranks, and means tending normally to retain said movable'member in abutment relation.

6. In a lock, the'combination with a bolt,

of actuating means therefor comprising carrier means to operate the bolt, means for causing the carrier to move along the look, a movable member borne by the carrier means, abutment means co-operating with said movable member to preventunintended movement of the carrier means, and means normally retaining said movable member in abutment relation, the means for causing the carrier to move along the lock being operative to cause said'mo'vable member to move out of abutment relation to permit the carrier to move along the lock to operate the. bolt.

7; In a door lock of the character set forth, the combination'with a casing and a jamb piece, of a bolt projectable from the easing into thejamb piece, an actuator for the boltcomprising acarrierand a bearing member projected forward from the main portion thereof, the bolt "having bearing connection v with the bearing member,- the carrier being inner end of the provided also with means against which the belt has direct actuating cooperation, and means to move the actuator.

8. In a door lock, the combination with a casing for the door and a keeper for the jamb, of a bolt projectable from the casing into the keeper for engagement therewith, an ac tuator for the bolt comprising a plate-like carrier having an integral shank projecting from its forward edge, the bolt having tiltable'co-operation with the front enn of said shank, said carrier furthermore having a flat abutment member at its forward edge against which the inner en d of the bolt squarely abuts when projected, and means to move the carrier along the casing and cause thereby the tilting movements of the bolt.

9. A lock, including a casing,

tractable within said casing, a plat movable a bolt reto project said bolt and being formed with a slot, an arm movably carried by said plate, bolt-actuating means, and means carried by said arm and extending through said slot to be engaged by said actuating means.

7 10. A lock, including, in combination, a casing, a bolt retractable within said casing, a plate connected with and carrying said bolt, a crank pivoted to said plate, engagement elements secured to the outer end of said crank, and one of the same extending through an arcuateslot formed in said plate, and lockacti'iating means associated with said casing and contactable with said engagement elements for exerting pressure upon said crank to shift said plate and project said bolt.

in testimony whereof I affix my signature.

FRANCIS J. BOWLING. 

